Abstract

To study the material dispersion effects on graded-index fibers, a method for measuring the material dispersion in optical glass fibers has been developed. Nanosecond pulses in the 0.5–1.7-μm region are generated by a nanosecond optical pulse radiator and grating monochromator. These pulses are injected into a GeO₂-P₂O₅-doped silica graded-index fiber. Relative time delay changes between different wavelengths are used to determine material dispersion, core glass refractive index, material group index, and optimum profile parameter of the graded-index fiber. From the measured data, the optimum profile parameter on the GeO₂-P₂O₅-doped silica graded-index fiber could be estimated to be 1.88 at 1.27 μm of the material dispersion free wavelength region and 1.82 at 1.55 μm of the lowest-loss wavelength region in silica-based optical fiber waveguides.

© 1979 Optical Society of America

Transmission bandwidth properties of GeO₂-P₂O₅-doped silica graded-index optical fibers

Y. Ohmori
Appl. Opt. 20(24) 4307-4312 (1981)

Profile dispersion characteristics in high-bandwidth graded-index optical fibers

M. Horiguchi, Y. Ohmori, and H. Takata
Appl. Opt. 19(18) 3159-3167 (1980)

Dispersion minimum of monomode fibers

K. Jurgensen
Appl. Opt. 18(8) 1259-1261 (1979)

Binary silica optical fibers: refractive index and profile dispersion measurements

H. M. Presby and I. P. Kaminow
Appl. Opt. 15(12) 3029-3036 (1976)

Frequency characteristics of graded-index fibers

Mitsuhiro Tateda, Shigeyuki Seikai, and Naoya Uchida
Appl. Opt. 19(5) 765-769 (1980)